Kyynelrauhanen

a. kyynelrauhanen

Kyynelrauhanen (lat. glandula lacrimalis) sijaitsee silmän yläreunassa ja se erittää silmää huuhtovaa kyynelnestettä. Kyynelnesteen tehtävä on huolehtia sarveiskalvon ravinnonsaannista ja kastella silmän pintaa, jottei se kuivuessaan muuttuisi läpinäkymättömäksi. Lisäksi kyynelneste sisältää mikrobikasvustoa estävää lysotsyymi-nimistä entsyymiä. Kyynelnesteen erityttyä silmän pintaan se poistuu nenän puoleisesta silmäkulmasta kahden kyynelpisteen kautta kyyneltiehyitä pitkin kyynelpussiin. Kyynelpussista kyynelneste siirtyy kyynelkanavaa pitkin nenäonteloon, jossa kyynelkanava aukeaa joko nenäontelon alakuorikon eteen tai sivulle. Kyynelrauhasen toimintaa kiihdyttää parasympaattinen hermosto ja vähentää sympaattinen hermosto. Seitsemäs aivohermo eli kasvohermo toimii muiden toimintojensa ohella kyynelrauhasen parasympaattisena hermona.

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Araneus bicentenarius Klasifikasi ilmiah Kerajaan: Animalia Filum: Arthropoda Kelas: Arachnida Ordo: Araneae Famili: Araneidae Genus: Araneus Spesies: Araneus bicentenarius Nama binomial Araneus bicentenariusMcCook, 1888 Araneus bicentenarius adalah spesies laba-laba yang tergolong famili Araneidae. Spesies ini juga merupakan bagian dari genus Araneus dan ordo Araneae. Nama ilmiah dari spesies ini pertama kali diterbitkan pada tahun 1888 oleh McCook. Laba-laba ini biasanya banyak ditemui di ...

 

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Colours used to represent a political ideology, movement or party This article has multiple issues. Please help improve it or discuss these issues on the talk page. (Learn how and when to remove these template messages) This article may require cleanup to meet Wikipedia's quality standards. The specific problem is: Per talk page, to make more encyclopedic and less of a list. Please help improve this article if you can. (July 2020) (Learn how and when to remove this message) This article needs...

 

French politician You can help expand this article with text translated from the corresponding article in French. (December 2008) Click [show] for important translation instructions. View a machine-translated version of the French article. Machine translation, like DeepL or Google Translate, is a useful starting point for translations, but translators must revise errors as necessary and confirm that the translation is accurate, rather than simply copy-pasting machine-translated text into...

 

ملكة جمال الكون 1956 كارول موريس ، حاملة لقب مسابقة ملكة جمال الكون 1956كارول موريس ، حاملة لقب مسابقة ملكة جمال الكون 1956 تاريخ العرض 20 يوليو 1956 مقدم الحفل بوب راسل مكان مركز لونغ بيتش للمؤتمرات والترفيه، لونغ بيتش، الولايات المتحدة مشاركين 30 المراكز 15 ظهر لإول مرة غيانا البري...

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Crater lake in El Salvador which fills a caldera Lake IlopangoWestward view from lake Ilopango, aft San Salvador Metropolitan Area and San Salvador (volcano) lie just aheadHighest pointElevation450 m (1,480 ft)Coordinates13°40′N 89°03′W / 13.67°N 89.05°W / 13.67; -89.05GeographyLake IlopangoLocation in El Salvador LocationEl SalvadorGeologyMountain typeCalderaLast eruption1879 to 1880 Lake IlopangoEastward view from San Salvador (volcano), San Sa...

 

Airline based in Cairo, Egypt Air Sinai IATA ICAO Callsign 4D ASD AIR SINAI Founded1982Ceased operations2021HubsCairo International AirportFocus citiesBen Gurion International AirportFleet sizeat time of service termination: 2Destinationsat time of service termination: 2Parent companyEgyptair Airlines CompanyHeadquartersCairo, Egypt Air Sinai (Arabic: سيناء للطيران Sīna' lil-Ṭayyarān) was an airline based in Cairo, Egypt. It operated as a 'paper airline' for parent company Egy...

 

Multi-purpose arena at Princeton University L. Stockwell Jadwin GymnasiumJadwin JungleLocationPrinceton UniversityPrinceton, NJ 08542Coordinates40°20′36″N 74°38′55″W / 40.343449°N 74.648595°W / 40.343449; -74.648595OwnerPrinceton UniversityOperatorPrinceton UniversityCapacity6,854ConstructionBroke ground1964Opened1969Construction cost$6.5 millionArchitectWalker O. Cain & Assoc.TenantsPrinceton Tigers(Basketball, track, fencing, squash, & tennis) The...

For related races, see 1950 United States gubernatorial elections. 1950 Connecticut gubernatorial election ← 1948 November 7, 1950 1954 →   Nominee John Davis Lodge Chester Bowles Party Republican Democratic Popular vote 436,418 419,404 Percentage 49.66% 47.73% County resultsLodge:      50–60%      60–70%Bowles:      40–50%      50–60% Governor before el...

 

American mainframe computer manufacturer This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed.Find sources: Amdahl Corporation – news · newspapers · books · scholar · JSTOR (November 2009) (Learn how and when to remove this message) Amdahl CorporationGenreInformation technologyFoundedOctober 19, 1970; 53 years ago...

 

Type of arch with a circular arc of less than 180 degrees A segmental arch. A segmental arch is a type of arch with a circular arc of less than 180 degrees.[1] It is sometimes also called a scheme arch.[2] The segmental arch is one of the strongest arches because it is able to resist thrust.[3][clarification needed] To prevent failure, a segmental arch must have a rise that is equal to at least one-eighth the width of the span. Segmental arches with a rise that...

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